315310378 has 4 divisors (see below), whose sum is σ = 472965570. Its totient is φ = 157655188.

The previous prime is 315310363. The next prime is 315310379. The reversal of 315310378 is 873013513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873013513 = 10789 ⋅80917.

It can be written as a sum of positive squares in only one way, i.e., 226893969 + 88416409 = 15063^2 + 9403^2 .

It is not an unprimeable number, because it can be changed into a prime (315310379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78827593 + ... + 78827596.

Almost surely, 2^315310378 is an apocalyptic number.

315310378 is a deficient number, since it is larger than the sum of its proper divisors (157655192).

315310378 is a wasteful number, since it uses less digits than its factorization.

315310378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157655191.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 315310378 is about 17756.9811060326. The cubic root of 315310378 is about 680.6326134223.

It can be divided in two parts, 3153 and 10378, that added together give a palindrome (13531).

The spelling of 315310378 in words is "three hundred fifteen million, three hundred ten thousand, three hundred seventy-eight".